Recording system, receiving apparatus, recording apparatus, recording control method, and program

ABSTRACT

Disclosed herein is a recording system including a receiving apparatus and a recording apparatus, wherein the receiving apparatus includes, a creation section, and a reservation control section, the recording apparatus includes, a recording section, and a recording control section.

CROSS-REFERENCE TO RELATED APPLICATION

The present application claims priority from Japanese Patent ApplicationNo. JP 2008-201180 filed in the Japanese Patent Office on Aug. 4, 2008,the entire content of which is incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a recording system, a receivingapparatus, a recording apparatus, a recording control method, and aprogram whereby the content data received by a source receivingapparatus is transmitted to a designation recording apparatus arrangedto record the transmitted content data.

2. Description of the Related Art

Recent years have seen AV (audio visual) content streaming servicesoffered by use of networks such as the Internet and cable TV(television) networks. Generally, these services involve distribution ofreceivers called set-top boxes (STB).

An STB not incorporating a hard disk drive (HDD) or the like capable ofrecording and saving contents may need to be connected in some way to arecorder for recording the contents. For example, if the STB and therecorder are connected to each other on a home network using theEthernet (registered trademark) or the like, the STB may transfercontents to the recorder arranged to record the transferred contents(e.g., see Japanese Patent Laid-open No. 2004-328648).

SUMMARY OF THE INVENTION

However, where recording reservations are set using the above-mentionedhome network, the recorder is not cognizant of any reservation on whichis based the content transferred from the STB. If some content not basedon any reservation is transferred to the recorder for recording, therecorder may thereafter become incapable of recording any other contentof which the recording has been set beforehand.

The present invention has been made in view of the above circumstancesand provides a recording system, a receiving apparatus, a recordingapparatus, a recording control method, and a program for unfailinglyrecording the content that has been reserved for recording.

In carrying out the present invention and according to one embodimentthereof, there is provided a recording system including a receivingapparatus and a recording apparatus; wherein the receiving apparatusincludes: a creation section configured to create reservationinformation designating a reception date and time at which to receivecontent data and a destination to which to transfer the received contentdata, together with identification information identifying thereservation information; and a reservation control section configured totransmit the reservation information and the identification informationto the destination; the recording apparatus includes: a recordingsection configured to record the reservation information and theidentification information; and a recording control section configuredto control recording of the content data based on the reservationinformation; upon arrival of the reception date and time designated bythe reservation information, the reservation control section receivesthe content data and transfers the received content data, along with theidentification information, to the destination designated by thereservation information; and, given the identification informationtransferred along with the content data, the recording control sectionreads the reservation information from the recording section so as torecord the content data based on the reservation information.

According to another embodiment of the present invention, there isprovided a receiving apparatus including: a creation section configuredto create reservation information designating a reception date and timeat which to receive content data and a destination to which to transferthe received content data, together with identification informationidentifying the reservation information; and a reservation controlsection configured to transmit the reservation information and theidentification information to the destination; wherein, upon arrival ofthe reception date and time designated by the reservation information,the reservation control section receives the content data and transfersthe received content data, along with the identification information, tothe destination designated by the reservation information.

According to a further embodiment of the present invention, there isprovided a recording apparatus including: a recording section configuredto record reservation information designating a reception date and timeat which to receive content data and a destination to which to transferthe received content data, and identification information identifyingthe reservation information; and a recording control section configuredto control recording of the content data based on the reservationinformation; wherein, given the identification information transferredalong with the content data, the recording control section reads thereservation information from the recording section so as to record thecontent data based on the reservation information.

According to an even further embodiment of the present invention, thereis provided a recording control method including the steps of: allowinga receiving apparatus to create reservation information designating areception date and time at which to receive content data and adestination to which to transfer the received content data, togetherwith identification information identifying the reservation information;allowing the receiving apparatus to transfer the reservation informationand the identification information to the destination; allowing thedestination to hold the reservation information and the identificationinformation in a recording section; upon arrival of the reception dateand time designated by the reservation information, allowing thereceiving apparatus to receive the content data and to transfer thereceived content data, along with the identification information, to thedestination designated by the reservation information; and given theidentification information transferred along with the content data,allowing the destination to read the reservation information from therecording section so as to record the content data based on thereservation information.

According to a still further embodiment of the present invention, thereis provided a program for causing an information processing apparatus toexecute a procedure including the steps of: allowing a receivingapparatus to create reservation information designating a reception dateand time at which to receive content data and a destination to which totransfer the received content data, together with identificationinformation identifying the reservation information; allowing thereceiving apparatus to transfer the reservation information and theidentification information to the destination; allowing the destinationto hold the reservation information and the identification informationin a recording section; upon arrival of the reception date and timedesignated by the reservation information, allowing the receivingapparatus to receive the content data and to transfer the receivedcontent data, along with the identification information, to thedestination designated by the reservation information; and given theidentification information transferred along with the content data,allowing the destination to read the reservation information from therecording section so as to record the content data based on thereservation information.

According to the present invention, the reservation informationdesignating the reception date and time at which to receive content dataand the identification information identifying the reservationinformation are held by both the source apparatus that transmits thecontent data and the destination apparatus that receives the transmittedcontent data. Upon arrival of the content data reception date and timedesignated by the reservation information, the source apparatustransmits the content data along with the identification information tothe destination apparatus. This makes it possible reliably to record thecontent of which a recording reservation has been set.

BRIEF DESCRIPTION OF THE DRAWINGS

Further advantages of embodiments of the present invention will becomeapparent upon a reading of the following description and appendeddrawings in which:

FIG. 1 is a view showing a typical configuration of a recording systemas one embodiment of the present invention;

FIG. 2 is a block diagram showing structures of a receiver and arecorder making up the recording system;

FIG. 3 is a schematic view showing a recording reservation process, atransfer process, and a recording process involving contents;

FIG. 4 is a flowchart of steps performed by the receiver executingrecording reservation operations;

FIG. 5 is a flowchart of steps performed by the receiver executingtransfer operations; and

FIG. 6 is a flowchart of steps performed by the recorder executingrecording operations.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Some preferred embodiments of the present invention will now bedescribed below in detail by referring to the accompanying drawings. Arecording system embodying the present invention is configured so that asource receiving apparatus of the system transfers content data to adestination recording apparatus of the system arranged to record thecontent data.

FIG. 1 shows a typical configuration of the recording system as oneembodiment of the present invention. This recording system is made up ofa receiver 10, a recorder 20, and a receiver 30 all interconnected by anetwork 50.

The receiver 10 receives digital broadcasts and may transfer contentdata of the received digital broadcast to the recorder 20 via thenetwork 50. The recorder 20 is capable of recording the content data toa plurality of destination recording medium such as HDD (hard diskdrive), DVD (digital versatile disc), and Blue-ray Disc (referred to asBD hereunder; registered trademark). Illustratively, the receiver 30 mayreceive a content delivered over the Internet and transfer the contentdata to the recorder 20 via the network 50.

The content received by the receiver 10 or 30 may be transferred via thenetwork to the recorder 20 and recorded by the latter to the HDD or tothe optical disk such as DVD inside. The content recorded by therecorder 20 may be reproduced by monitors 41 through 43 connected to thereceiver 10, recorder 20, and receiver 30 respectively.

Through the use of their reservation recording function, the receivers10 and 30 and the recorder 20 set recording reservations bycommunicating with one another. Based on the recording reservations, thereceivers 10 and 30 transfer contents to the recorder 20 for recording.When making a recording reservation, the receiver 10 or 30 creates anindividual reservation ID identifying reservation informationdesignating the reception date and time at which to receive a contentand the destination to which to transfer the received content. Thereceivers 10 and 30 and the recorder 20 record the reservationinformation and the reservation ID one another. Also, when making therecording reservation, the receiver 10 or 30 designates one of aplurality of recording medium incorporated in the recorder 20. Forexample, where the optical disk is desired, a type of medium such as DVDor BD is designated. The receivers 10 and 30 and the recorder 20 recordrecording destination information along with the above-mentionedreservation ID. That is, the reservation information includes contentinformation describing the genre, title, channel, date and time, etc.,regarding the target content to be recorded, and the recordingdestination information describing the recorder as the destination forrecording, the type of medium at the destination, etc.

When effecting a transfer to the recorder 20 based on the recordingreservation, the recorder 10 or 30 notifies the recorder 20 of thereservation ID. This allows the recorder 20 to recognize the recordingreservation on which the content transfer is based. The reservation IDalso enables the recorder 20 to recognize the type of medium to which torecord the content. This makes it possible to select the type of mediumfor each recording reservation.

Alternatively, when effecting the transfer based on the recordingreservation, the receiver 10 or 30 may notify the recorder 20 of thetype of medium such as DVD or BD along with the reservation ID.

FIG. 2 is a block diagram showing structures of the receiver andrecorder making up the above-mentioned recording system. As an example,the receiver 10 receiving digital broadcasts and the recorder 20possessing a plurality of recording medium as the destination forrecording will be explained hereunder.

The receiver 10 contains a CPU (central processing unit) 11, a RAM(random access memory) 12, a ROM (read only memory) 13, a networkconnection section 14, an input/output interface 15, a reception section16, and a decoder 17.

The CPU 11 is a main controller that controls the receiver 10 as awhole. Illustratively, the CPU 11 processes control information andprogram information which are transferred over a bus for channelselection purposes. More specifically, based on a digital copy controldescriptor, a content usage descriptor, etc., describing informationabout the copyright protection of digital broadcast contents, the CPU 11controls the real-time output and reproduction output of the receivedbroadcast content and the processing of recording reservations for thepurpose of content copyright protection. Also, when a recordingreservation is to be made, the CPU 11 creates reservation informationtogether with a reservation ID as will be discussed later, and transmitsthe created information and ID to the recorder 20 through the networkconnection section 14.

The RAM 12 is a rewritable volatile memory into which to load theexecutive program code of the CPU 11 or to which to write working dataof executive programs.

The ROM 13 is a read-only memory that permanently stores self-diagnosisand/or initialization programs to be executed upon power-on of thereceiver 10 as well as the microcode for hardware operations.

The network connection section 14 is a communication controller thatcommunicates via the network with devices external to the receiver 10.

The input/output interface 15 is a module that processes the inputoperations performed by a user. Illustratively, the input/outputinterface 15 is furnished with control buttons/switches to be operatedmanually by the user, as well as a capability that accepts remoteoperations from a remote controller in the form of infrared rays (IR).

The receiver 16 contains a tuner and a demodulator. Given commands fromthe CPU 11, the tuner tunes in to the broadcast wave of a given channeland outputs the received data to the demodulator. In turn, thedemodulator demodulates the received data that was digitally modulated.

The demodulated digital data illustratively constitutes a transportstream formed by MPEG-2 compressed AV data and program information beingmultiplexed. The AV data is made up of video and audio information aswell as subtitle data making up the bodies of broadcast programs. Theprogram information is a set of data that accompanies the broadcastprograms. As such, the program information is described in section formsuch as PSI or SI and is used for bringing about EPG (electronic programguide) or for making program recording reservations.

The decoder 17 contains a TS decoder for interpreting the transportstream and an AV decoder for separating AV data into compressed videodata and compressed audio data. The TS decoder interprets the transportstream and separates it into MPEG-2 compressed AV data and programinformation, outputting the compressed AV data to the AV decoder andtransmitting the program information to the CPU 11 over the bus. The TSdecoder may optionally be equipped with a local memory for holdingworking data. Upon receipt of the MPEG 2 compressed real-time AV datafrom the TS decoder, the AV decoder separates the received data intocompressed video data and compressed audio data. The AV decoder thendecompresses the video data in MPEG-2 format for reproduction of theoriginal video signal and decodes the audio data in PCM (pulse codemodulation) format before synthesizing the decoded data with additionalsounds to create a reproduced audio signal. The AV decoder mayoptionally be furnished with a local memory for holding working data.The reproduced video signal is output to and displayed by the monitor 41while the reproduced audio signal is output to and reproduced byspeakers. On the basis of recording reservations, the compressed videodata and compressed audio data may be transferred compressed to therecorder 20 through the network connection section 14 over the bus, aswill be discussed later.

The receiver 10 is furnished with a HDD which, when a recordingreservation is to be set, records the created reservation informationand reservation ID. Preferably, contents may be recorded temporarily tothe HDD to make sure that the contents are transferred unfailingly tothe recorder 20.

What follows is an explanation of the structure of the recorder 20. Therecorder 20 is constituted by a CPU 21, a RAM 22, a ROM 23, a networkconnection section 24, an input/output interface 25, a drive 26, anoptical disk 27, a HDD 28, and a decoder 29.

The CPU 21 executes programs stored in the ROM 23 or programs loadedfrom the HDD 28 into the RAM 22, and controls the operations of thecomponents connected to a bus. The CPU 21 also controls the recording ofcontents to the HDD 28 or to the optical disk 27.

The network connection section 24 is a communication controller thatcommunicates via a network with devices external to the recorder 20.

The input/output interface 25 is a module that processes the inputoperations performed by a user. Illustratively, the input/outputinterface 25 is furnished with control buttons/switches to be operatedmanually by the user, as well as a capability that accepts remoteoperations from a remote controller in the form of infrared rays (IR).

The drive 26 drives the attached optical disk 27 such as DVD or BD.Also, the drive 26 drives a memory card that may be inserted into a slotformed on the enclosure of the recorder 20.

The HDD 28 records the contents supplied over the bus. Under control ofthe CPU 21, the HDD 28 serves as an intermediate buffer that storescontents before they are recorded to the optical disk 27.

In the above-described recording system, the receiver 10 and therecorder 20 interconnected via the network can offer capabilities toeach other in accordance with suitable technical specifications such asUPnP (Universal Plug and Play).

UPnP is a set of specifications that presupposes the use of TCP(Transmission Control Protocol)/IP (Internet Protocol). Three protocolsconsisting of AutoIP, MULTICAST DNS, and SSDP (Simple Service DiscoverProtocol) form the basis of UPnP. As such, UPnP is a combination of IPtechnologies and XML constituting standard technologies of the Internet.

With regard to the content transfer under UPnP, the devices involved aregrouped into two categories: medium servers for providing content data,and control points that function as control terminals. The medium servercorresponds to what is generally called the server in a network system.In this embodiment of the invention, the receiver 10 works as the mediumserver.

The control points are each capable of controlling a UPnP-based deviceconnected to the network. The control point capability may also beincorporated in the medium server. All or part of the devicesconstituting the network may each be furnished with the control pointcapability. In this example, the control point capability is assumed tobe included in the receiver 10.

The control point capability is roughly classified into two functions:actions and queries. Actions are carried out in the manner specified byaction information in a service description. Taking actions enables thecontrol point to operate its target. Queries are used to acquire thevalues of device information in the service description. Actions orqueries are implemented using the transport protocol called SOAPexpressed in XML.

Also, the medium server incorporates the function called CDS (ContentsDirectory Service). CDS has two abstract objects: containers and items.They correspond illustratively to folders and files of Windows(registered trademark), an operating system offered by MicrosoftCorporation.

Described below in reference to FIGS. 3 and 4 is the recordingreservation process. FIG. 3 schematically shows the recordingreservation process, transfer process, and recording process involvingcontents. FIG. 4 is a flowchart of steps performed by the receiver 10executing recording reservation operations. The recording reservationoperations of the receiver 10 are controlled by the CPU 11 carrying outthe programs stored in the ROM 13 or the programs loaded from the HDDinto the RAM 12.

In step S41, the receiver 10 creates a recorder list. More specifically,upon power-on, the receiver 10 makes a request searching for devicesthat may be connected to the network (“M-Search request” in step S11 inFIG. 3). Given the request from the receiver 10, the recorder 20 sendsback a response (“M-Search response” in step S12). The receiver 10 thenqueries the recorder 20 about device information called the devicedescription (“Get Device Description” in step S13). In response to thequery from the receiver 10 about the device information, the recorder 20transmits a device description document in XML constituting the deviceinformation to the receiver 10 (in step S14). By acquiring the XMLdocument, the receiver 10 can recognize a list of actions that can beeffected on the recorder 20.

In step S42, the receiver 10 determines whether or not to set arecording reservation. If a recording reservation is to be set based onthe input operations performed by the user, then step S43 is reached. Ifno recording reservation is to be made here, then the recordingreservation process is brought to an end.

In step S43, the receiver 10 acquires device information about themedium, capacity, etc., of the recorder 20. More specifically, as shownin steps S15 through S18, the receiver 10 queries the recorder 20 aboutrecording device information such as DestinationID, FriendlyName, etc.,of the drive for writing purposes (“GetRecordDestinations”). Inresponse, the recorder 20 transmits to the receiver 10 recording deviceinformation illustratively about HDD, BD, DVD, and memory card(“GetRecordDestinationList”). The receiver 10 also queries the recorder20 about detail information illustratively as to whether the drive isavailable for writing and how much free space the drive offers(“GetRecordDestinationInfo”). In turn, the recorder 20 transmits detailinformation such as drive status to the receiver 10(“RecordDestinationInfo”). For example, if the recorder 20 is capable ofwriting data to DVD+RW or DVD-R and if a DVD+RW disk is currentlyinserted, then the recorder 20 transmits the following detailinformation:

Recordable medium type: allowedTypes=BD, DVD+RW, DVD-R

Currently inserted recording medium: currentMediumType=DVD+RW

The transmitted detail information allows the receiver 10 to designatethe type of medium as the destination for recording.

Also, the receiver 10 queries the recorder 20 about a container ID,logical content storage locations, etc., of the drive(“GetRecordContainerID”). In response, the recorder 20 sends back thecontainer ID, logical content storage locations, etc., of the drive tothe receiver 10.

In step S44, the receiver 10 sets a recording reservation based on theinput operations performed by the user. For example, on the basis of thedevice information acquired in step S43, the receiver 10 designatescontent information such as the channel and the date and time of thetarget content to be recorded, as well as recording destinationinformation such as the recorder as the destination for recording andthe type of medium to which to transfer the content. More specifically,the user initiates the recording reservation by use of the input/outputinterface 15, and selects the target content to be recordedillustratively by resorting to EPG information or by designating thechannel and the date and time for recording. The user also selects suchsettings as high-quality recording and long-hour recording for eachcontent to be recorded. With regard to these settings, the recorder andthe type of medium may be fixedly determined beforehand.

The receiver 10 creates the above-described content information andrecording destination information as reservation information, andcreates a reservation ID of a unique value regarding each recordingreservation. And the receiver 10 records the reservation information andreservation ID to the HDD.

In step S45, the receiver 10 transfers the reservation information andthe reservation ID to the recorder 20 (step S19). The recorder 20records the reservation information and reservation ID to the HDD 28and, based on the recording capacity and reservation status of therecorder 20, transmits a reservation-allowed response to the receiver 10(step S20). If there is a previous reservation for the medium designatedas the destination for recording or if, with the recorder 20 incapableof executing two recording processes in parallel, a reservation is foundto have been made for another recording destination medium although noreservation exists for the medium targeted as the destination forrecording, then the recorder 20 sends back a reservation-deniedresponse.

In step S46, the receiver 10 determines whether a reservation-allowedresponse is received. If a reservation-denied response is foundreceived, a reservation error is displayed in step S47, and step S42 isreached again. In this case, step S43 may be omitted. If thereservation-allowed response is acquired, the receiver 10 terminates therecording reservation process.

Described below in reference to FIGS. 3, 5 and 6 is how the recordingsystem operates on the basis of a recording reservation. FIG. 5 is aflowchart of steps performed by the receiver executing transferoperations, and FIG. 6 is a flowchart of steps performed by the recorderexecuting recording operations. The transfer operations of the receiver10 are controlled by the CPU 11 carrying out the programs stored in theROM 13 or the programs loaded from the HDD into the RAM 12. Therecording operations of the recorder 20 are controlled by the CPU 21executing the programs stored in the ROM 23 or the programs loaded fromthe HDD 28 into the RAM 22.

In step S51, when the time designated at reservation time is reached,the receiver 10 starts itself up and gets ready for recording.

In step S52, the receiver 10 transmits a content transfer requestmessage specifying the type of medium designated at reservation time asthe destination for recording. More specifically, the receiver 10transmits recording destination information written in XML to therecorder 20 (step S21). At this point, the reservation ID attached tothe reservation information at the time of recording reservation istransmitted.

In step S53, the receiver 10 determines whether a recording-allowedresponse is returned from the recorder 20 to which the content transferrequest message was transmitted. If the recording-allowed response isfound received, step S54 is reached. If a recording-denied response isfound received, then step S55 is reached. The recording process of therecorder 20 will be discussed later.

In step S54, the receiver 10 transfers the content to the recorder 20.That is, the receiver 10 in step S54 performs the process called“http-post” defined by UPnP, transferring the content data to the URLthat was received along with the recording-allowed response (step S23).When transmission of the content of a given title is completed, thereceiver 10 notifies the recorder 20 of the end of the contenttransmission (“StopPst” in step S24).

Meanwhile, the recorder 20 performs the recording process such as oneshown in FIG. 6. When the time designated at reservation time isreached, the recorder 20 starts itself up.

In step S61, the recorder 20 waits for the reception of a contenttransfer request containing recording destination information written inXML. Upon response of the content transfer request, step S62 is reached.

In step S62, the recorder 20 searches the HDD 28 for reservationinformation that would match the reservation ID received earliertogether with the content transfer request. If there is the reservationinformation corresponding to the reservation ID, i.e., if thereservation ID has a match, then step S65 is reached and the recorder 20sends a recording-allowed response to the receiver 10. Morespecifically, the recorder 20 transmits to the receiver 10 the URL(Uniform Resource Locator) representing the storage area of thedestination to which to record the content data (“CreateObject response”in step S22). If there is no reservation information corresponding tothe reservation ID, i.e., if the reservation ID does not have a match,then step S63 is reached.

In step S63, the recorder 20 determines whether recording is scheduledto take place based on the reservation information from the HDD 28. Forexample, if the user presses the record button of the receiver 10 in atime zone in which recording is scheduled to take place based on arecording reservation, a transfer request is issued with no reservationID attached. In this case, the recorder 20 determines that recording isscheduled to take place based on reservation information. Whererecording is scheduled to take place, step S67 is reached and arecording-denied response is output to the receiver 10. Where norecording is scheduled to take place, step S64 is reached.

In step S64, the recorder 20 determines the free space of the medium atthe recording destination designated by the content transfer request.For example, if the free space of the medium at the recordingdestination is found to have been exhausted, then step S67 is reachedand the recorder 20 returns a message saying that the recording requestwith no reservation ID attached is denied because of the medium beingfull. That is, the recorder 20 accepts only the recording based on areservation ID. If a free space is found available on the medium at therecording destination in step S64, then step S65 is reached.

In step S65, the recorder 20 outputs a recording-allowed response to thereceiver 10. More specifically, the recorder 20 transmits to thereceiver 10 the URL (Uniform Resource Locator) denoting the storage areaof the recording destination to which to record the content data(“CreateObject response” in step S22).

In step S66, the recorder 20 receives the content data sent from thereceiver 10 and records the received content data to the recordingdestination designated by the reservation information or by the contenttransfer request. Upon receipt of “StopPost” indicating the end of thecontent transfer from the receiver 10, the recorder 20 transmits acomplete signal to the receiver 10.

As described, when a content transfer request with a matchingreservation ID is accepted as based on a previously allowed reservation,the recorder 20 can reliably record the content reserved for recording.Where a content transfer request does not have a matching reservationID, the request is accepted only if a free space is found available onthe medium with no other recording scheduled to take place.Illustratively, if the user presses the record button in a time zone inwhich recording is scheduled to take place based on a recordingreservation, the recorder 20 receives a content transfer request with noreservation ID attached. In this case, the user is given a warning whenthe receiver 10 is notified of the previously established recordingreservation.

If the medium at the recording destination are full of recordingreservations, then the recorder 20 may only accept attempts to recordcontents based on reservation IDs. The recorder 20 may return arequest-denied message in response to every recording request with noreservation ID attached because the medium are already full of recordingreservations.

That is, when a recording reservation is to be set, a reservation IDthat can identify the recording reservation in question is agreed onbeforehand between a source apparatus that transmits content data and adestination apparatus that receives the transmitted content data. Whenrecording is actually started, the reservation ID is sent from thereceiver 10 to the recorder 20 so that the priority of the recordingwill be established and an alarm indication for the user will bedisplayed as needed. When the type of medium to which to record contentdata is set for each recording reservation and the medium typeinformation is kept in relation to the corresponding reservation ID, thetype of medium can be suitably selected for the recording of eachreservation.

Although the description above contains many specificities, these shouldnot be construed as limiting the scope of the invention but as merelyproviding illustrations of some of the presently preferred embodimentsof this invention. It is to be understood that changes and variationsmay be made without departing from the spirit or scope of the claimsthat follow. For example, if the series of the steps or processesdescribed above is to be executed by software, the programs constitutingthe software may be incorporated beforehand in the dedicated hardware ofa suitable computer.

1. A recording system, comprising: a receiving apparatus; and adestination recording apparatus; wherein said receiving apparatusincludes: a creation section configured to create reservationinformation designating a reception date and time at which to receivedesignated content data and a destination recording apparatus to whichto transfer the received content data, and to create identificationinformation identifying said reservation information, and a reservationcontrol section configured to transmit said reservation information andsaid identification information to said destination recording apparatus;said destination recording apparatus includes: a recording sectionconfigured to record said reservation information and saididentification information, and a recording control section configuredto control recording of the content data based on said reservationinformation, wherein upon arrival of the reception date and timedesignated by said reservation information, said reservation controlsection of said receiving apparatus receives said content data andtransfers the received content data, along with said identificationinformation, to said destination recording apparatus designated by saidreservation information, and in response to said recording controlsection of said destination recording apparatus finding, stored in saidrecording section, reservation information identified by saididentification information transferred along with said content data,said recording control section reads said identified reservationinformation from said recording section to allow recording of saidcontent data designated by said reservation information.
 2. Therecording system according to claim 1, wherein said recording section isconfigured to record said content data to a plurality of types ofrecording medium; and said reservation control section creates thereservation information designating the recording medium.
 3. Therecording system according to claim 1, wherein said recording section isconfigured to record said content data to a plurality of types ofrecording medium; and said reservation control section designates one ofsaid plurality of types of recording medium when transferring saidcontent data.
 4. The recording system according to claim 1, wherein saidrecording section allows recording of other content data based on thereception date and time designated by said reservation information. 5.The recording system according to claim 1, wherein said recordingcontrol section allows recording of other content data based on a freespace of the recording medium designated by said reservationinformation.
 6. The recording system according to claim 1, wherein inresponse to said recording control section of said destination recordingapparatus not finding, stored in said recording section, reservationinformation identified by said identification information transferredalong with said content data, said recording control section allowsrecording of said transferred content data if said recording controlsection does not find other reservation information recorded in saidrecording section designating said reception date and time.
 7. Areceiving apparatus, comprising: a creation section configured to createreservation information designating a reception date and time at whichto receive designated content data and a destination to which totransfer the received content data, and to create identificationinformation identifying said reservation information; and a reservationcontrol section configured to transmit said reservation information andsaid identification information to said destination; wherein uponarrival of the reception date and time designated by said reservationinformation, said reservation control section receives said content dataand transfers the received content data, along with said identificationinformation, to said destination designated by said reservationinformation.
 8. A recording apparatus, comprising: a recording sectionconfigured to record reservation information designating a receptiondate and time at which to receive designated content data and adestination to which to transfer the received content data, and torecord identification information identifying said reservationinformation; and a recording control section configured to controlrecording of the content data based on said reservation information;wherein in response to said recording control section of saiddestination recording apparatus finding, stored in said recordingsection, reservation information identified by said identificationinformation transferred along with said content data, said recordingcontrol section reads said identified reservation information from saidrecording section to allow recording of said content data designated bysaid reservation information.
 9. The recording apparatus according toclaim 8, wherein in response to said recording control section notfinding, stored in said recording section, reservation informationidentified by said identification information transferred along withsaid content data, said recording control section allows recording ofsaid transferred content data if said recording control section does notfind other reservation information recorded in said recording sectiondesignating said reception date and time.
 10. A recording controlmethod, comprising: creating, at a receiving apparatus, reservationinformation designating a reception date and time at which to receivedesignated content data and a destination to which to transfer thereceived content data, together with identification informationidentifying said reservation information; transferring, by saidreceiving apparatus, said reservation information and saididentification information to said destination; holding, at saiddestination, said reservation information and said identificationinformation in a recording section; upon arrival of the reception dateand time designated by said reservation information, receiving, at saidreceiving apparatus, said content data, and transferring, by saidreceiving apparatus, the received content data along with saididentification information to said destination designated by saidreservation information; and in response to said destination finding,stored in said recording section, reservation information identified bysaid identification information transferred along with said contentdata, reading, by said destination, said identified reservationinformation from said recording section to recording of said contentdata designated by said reservation information.
 11. The recordingcontrol method according to claim 10, wherein in response to saiddestination not finding, stored in said recording section, reservationinformation identified by said identification information transferredalong with said content data, said destination allows recording of saidtransferred content data if said destination does not find otherreservation information recorded in said recording section designatingsaid reception date and time.
 12. A processor encoded with a computerprogram for carrying out a recording control method, comprising:creating, at a receiving apparatus, reservation information designatinga reception date and time at which to receive designated content dataand a destination to which to transfer the received content data,together with identification information identifying said reservationinformation; transferring, by said receiving apparatus, said reservationinformation and said identification information to said destination;holding, at said destination, said reservation information and saididentification information in a recording section; upon arrival of thereception date and time designated by said reservation information,receiving, at said receiving apparatus, said content data, andtransferring, by said receiving apparatus, the received content dataalong with said identification information to said destinationdesignated by said reservation information; and in response to saiddestination finding, stored in said recording section, reservationinformation identified by said identification information transferredalong with said content data, reading, by said destination, saididentified reservation information from said recording section torecording of said content data designated by said reservationinformation.
 13. The processor according to claim 12, wherein inresponse to said destination not finding, stored in said recordingsection, reservation information identified by said identificationinformation transferred along with said content data, said destinationallows recording of said transferred content data if said destinationdoes not find other reservation information recorded in said recordingsection designating said reception date and time.
 14. A receivingapparatus, comprising: creation means for creating reservationinformation designating a reception date and time at which to receivedesignated content data and a destination to which to transfer thereceived content data, and for creating identification informationidentifying said reservation information; and reservation control meansfor transmitting said reservation information and said identificationinformation to said destination; wherein, upon arrival of the receptiondate and time designated by said reservation information, saidreservation control means receives said content data and transfers thereceived content data, along with said identification information, tosaid destination designated by said reservation information.
 15. Arecording apparatus, comprising: recording means for recordingreservation information designating a reception date and time at whichto receive designated content data and a destination to which totransfer the received content data, and for recording identificationinformation identifying said reservation information; and recordingcontrol means for controlling recording of the content data based onsaid reservation information; wherein, in response to said recordingcontrol means finding, stored in said recording means, reservationinformation identified by said identification information transferredalong with said content data, said recording control means reads saididentified reservation information from said recording means to allowrecording of said content data designated by said reservationinformation.
 16. The recording apparatus according to claim 15, whereinin response to said recording control means not finding, stored in saidrecording means, reservation information identified by saididentification information transferred along with said content data,said recording control means allows recording of said transferredcontent data if said recording control means does not find otherreservation information recorded in said recording means designatingsaid reception date and time.